The gd export package comprises main and auxiliary executables,
documentation and examples. It can be obtained from  
GSI's ftp server or from
here.


The package is organized and installed as follows.

UNIX/Linux/Mac Systems

Available as a tar'ed and compressed archive (Note that for Mac systems Apple's X11 package must be installed as well).
Contents:

README.unix           this text.

    HELP/             documentation in HTML format.

     BIN/             executables:
         GD           gd executable 
         gd           Shell script to call different gd versions. 
                      Also sets the necessary LD_LIBRARY_PATH which is needed for
                      the dynamic loading of external user fit functions.

         fitfct       Basic shell script to compile and link user function
         gdfitfct     Convenience shell script to compile and link user function

         gdpath       Auxiliary shell script to set version dependent path.
 INCLUDE/             include headers
         fitusr.h     header file for user fit function
EXAMPLES/             examples
         usrfct.c     sample user fit function
         ...          example files


It is recommended to keep all gd-related files in a single directory GD apart from the root file system. 
To install: 

   mkdir GD
   cd GD
   uncompress GD.xxxx.tar.Z
   tar -xvf GD.xxxx.tar

Then place the following three lines in your user profile or some other central place:

   export GD=~/GD
   export PATH=$GD/BIN:$PATH

Additional assignments ( $GDDOC, $GDTUT ) are performed within the gd script.


The gd shell script  
supports versioning via additional keywords and respective locations ($GDOLD, $GDNEW):

   gd old     old version 
   gd         production version
   gd new     new version

To enable this selection change/add the assignments in the user profile, e.g.

   export GDNEW=~/GD0112g
   export PATH=$GDNEW/BIN:$PATH



Amiga Systems

Available as a self-extracting LhA archive.
Contents:

README.amiga          this text.

    HELP/             documentation in AmigaGuide and HTML format.

       C/             executables:
         GD030881     gd  for use with 68020/68881,68030/68882,68040,68060 systems.
                         It won't run on non-FPU systems.

         GD060881     gd  for use with 68060 (FPU) systems.
                         It probably won't run on lower systems.

         GD000FFP     gd  for use with the FFP math libraries. Suited for non-FPU systems.
                         Limited to numbers 1E-19..1E+19 and 6 digits precision.

         GD000IEEE    gd  for use with the IEEE math libraries. Suited for non-FPU systems.
                         Limited to numbers 1E-308..1E+308 and 16 digits precision.

         gd           Shell script to call different gd versions. 
                      Recommended for starting gd
         fitfct       Basic shell script to compile and link user function
         gdfitfct     Convenience shell script to compile and link user function
         fitfct.rexx  ReXX procedure to compile and link user function

         gdpath       Auxiliary shell script to set version dependent path.
         whichcpu     Auxiliary program to determine CPU type 
         whichfpu     Auxiliary program to determine FPU type 

    LIBS/             shared libraries

 INCLUDE/             include headers
         fitusr.h     header file for user fit function
EXAMPLES/             examples
         usrfct.c     sample user function
         ...          example files


It is recommended to keep all gd-related files in a single directory
apart
from the system partition, e.g. work:GD 
To install: 

   cd work:
   makedir GD
   cd GD
   GD.amiga.run

Then place the following lines in the file S:user-startup

   assign GD:     work:GD
   setenv GD      work:GD
   path   C:      GD:C     add
   path   REXX:   GD:C     add

Additional assignments ( GDLIBS:, GDDOC:, GDTUT: ) are performed within the gd script.


The gd shell script  
supports versioning via additional keywords and respective locations (GDOLD:, GDNEW:):

   gd old     old version 
   gd         production version
   gd new     new version

To enable these selections change/add the assignments in the start-up file, e.g.

   assign GDNEW:     work:GD0112g
   setenv GDNEW      work:GD0112g